>> > Right now I'm working on a script that would calculate dates from one >> > calendar to another. The normal calendar we use and a newly invented > one. >> >> [shudder] >> There are already WAY too many calendar systems. >> >> Inventing a new one is probably not such a good plan... >> >> Why re-invent the wheel? > > It's part of a game. In the RPG there are dates which the players would > like > to be able to convert from our calendar to that one, and back again.. You'll be way better off finding an existing calendar that "fits" your criteria than inventing a new one. >> But you didn't define how far into the future you need to go. >> Current time? >> A few years out? >> Stardates from Star Trek? >> You have to specify a start date, end date, and accuracy to choose a >> correct calendar system. > > It's mostly the past. The RPG is set in Egypt and the beginning of the > society in egypt has been taken as year 0. The start date I think is > obvious, but I do not understand an end date of a calendar.. Perhaps I'm > just blond.. but could you perhaps explain that one? Here's your IDEAL calendar: Your start date is 0 BC. So let's make that be represented by: 0 Day 1 is, errr, December 26, 0 BC, represented by: 1 Day 2, December 27, 0 BC, represented by: 3 . . . You can now calculate what's 2 billion+ (0xFFFFFFFF to be precise) days later, and that would be the last date you could conveniently represent in a 32-bit integer. Do you expect the characters/events in your RPG to extend beyond 2 billion days from December 25, 0 BC? If so, then a 32-bit integer, one integer per day, simply won't cut it. If not, then the above is an "ideal" date system. Now, that was your "ideal" system. Find a system that comes close to that. http://mysql.com http://postgresql.org PS Historians are ready to shoot me for using 12/25/0000 as 0 BC, but that's their problem, not mine. It's an RPG. We're not looking for historical accuracy here! -- Like Music? http://l-i-e.com/artists.htm -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
